The real maths start when you bid farewell to numbers. This problem binds algebraic fluency with geometrical reasoning and requires sound understanding carried by the idea of the midpoint, ability to form and solve an equation as well as use the worked values for further calculations.
It is fascinating what can be made of a rectangle and a few lines inside. It is a simple structure as that one on a picture above and yet there are so many opportunities to expand your reasoning and take your thinking further. 29 more words
When going through the questions and comments of the recent Zodiac series, I found a lot of questions regarding the spacetime interval and realised I didn’t go into it in any great detail in last years relativity series. 412 more words